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Question posted by dectujuje on August 17th, 2014

Back Light On Honeywell Rth8500d Thermostat Will Not Work

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Related Honeywell RTH8500D Manual Pages

Owner's Manual - Page 1

... 69-1725-1 RTH8500D Touch Screen Programmable Thermostat OWNER'S GUIDE The RTH8500D Thermostat provides electronic control of 24 Vac heating and cooling systems or 750 mV heating systems. For assistance with your Honeywell product, please visit www.honeywell.com/yourhome or call Honeywell Customer Care toll free at 1-800-468-1502. Registered Trademark © 2004 Honeywell International Inc...

Owner's Manual - Page 2

... 38 Set System Setting 40 Program Your Heating and Cooling Schedule 42 Cancel a Schedule Period 46 Set Time 47 Set Temperature Overrides 48 Clean Your Thermostat Screen 51 Use Your Filter Timer 52 Understanding Temperature Recovery Feature 53 Replace Batteries 54 Review Battery Tips 57 Built-in Compressor Protection 58 Troubleshooting...

Owner's Manual - Page 3

... included: Inside Set OWNER'S GUIDE Inside Set To Read and save these instructions WALLPLATE THERMOSTAT MOUNTING SCREWS (2) AND WALL ANCHORS (2) OWNER'S GUIDE WIRE LABELS CAUTION CARD CAUTION TURN...-1 Check that the following items are missing, call Honeywell Customer Care at the fuse/circuit breaker panel before returning the thermostat to system at the furnace, or at 1-800-468-1502 ...

Owner's Manual - Page 5

... ON WIRE COLOR. Follow Important Instructions 1. Do not connect the wires to the new thermostat based on wire color because damage can occur to your old thermostat. OLD THERMOSTAT YELLOW WHITE Y W RED G GREEN RC R ORANGE ! M22034 5 69-1725-1 Step 2. These Installation Instructions explain later how to use the enclosed wire labels to correctly...

Owner's Manual - Page 6

...Turn off power at the heating and/or cooling system or fuse/circuit breaker panel. 2. Step 3. Y G C OLD THERMOSTAT WALLPLATE W THERMOSTAT R COVER .2.18 .9 .7 .5 L O .25 N GE R .4 .3 M22036 MERCURY NOTICE If you are replacing a thermostat that contains mercury in a sealed tube, do not place your local waste management authority for instructions regarding recycling and the proper...

Owner's Manual - Page 7

... C1 wire with electrical tape. Wrap the bare end of each other or any other wires. 3. Disconnect the C and/or C1 wires. OLD THERMOSTAT Y G C C W R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE DO NOT CONNECT TO NEW THERMOSTAT M22201 7 69-1725-1 If you have two C and/or C1 wires connected to your new...

Owner's Manual - Page 8

... DESIGNATION SCREW TERMINAL WIRE WIRE HOLE CONNECT TO THE "C" ON THE NEW THERMOSTAT M22223 69-1725-1 8 Follow Special Instructions (Cont) 4. Visit www.honeywell.com/yourhome or call Honeywell Customer Care at 1-800-468-1502 before returning the thermostat to C on the new thermostat. If you have only one C and/or C1 wire connected to your...

Owner's Manual - Page 9

DO NOT CONNECT TO NEW THERMOSTAT M22040 9 69-1725-1 Wrap the end of the wires that are not connected with electrical tape. OLD THERMOSTAT Y G RC W R LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE WIRES NOT CONNECTED - Follow Special Instructions (Cont) 5. Step 4. If you find any wires not connected to your old thermostat, do not connect them to your new thermostat. 6.

Owner's Manual - Page 10

... each wire, use the enclosed wire labels to your new thermostat based on the color of the old thermostat from the wall. Do not connect wires to wrap a wire... of the wire. 69-1725-1 10 OLD THERMOSTAT W Y RC G Y G RC W R R WIRE LABEL LETTER DESIGNATION SCREW TERMINAL WIRE WIRE HOLE M22039 When connecting the wires to the new thermostat, refer to fall into the wall opening after...

Owner's Manual - Page 11

WALLPLATE WIRE HOLE THERMOSTAT M22202 11 69-1725-1 Separate the wallplate from the thermostat as shown. Step 6. Mount New Wallplate to Wall 1.

Owner's Manual - Page 15

... a CONVENTIONAL or HEAT PUMP system. 15 69-1725-1 Step 7. If only one of the terminals, Rc or R, is to be connected to wire the new thermostat. WALLPLATE METAL JUMPER WIRE TERMINAL BLOCK SCREW TERMINALS LETTER DESIGNATIONS RC R W Y G C M22206 3. If you have a standard heating and/or cooling system, use the HEAT PUMP...

Owner's Manual - Page 20

... separate wires on both O and B, be sure to attach the B wire to the C, contact Honeywell. 4 If the old thermostat had wires on the new thermostat. Call your local heating and cooling contractor for assistance. 3 If the old thermostat had wires on W1, Y1 and W2, some system modification is required. Call your local heating...

Owner's Manual - Page 24

Press the Done key. Set the Calendar This thermostat is designed to automatically keep current time and day in memory for instructions. 69-1725-1 24 Use the arrow keys ... THU FRI DONE USE ARROWS TO SET YEAR M22226 The calendar can be set the year, month and day. 2. When the thermostat is first powered, the display is set the calendar. 1. See Step 11, Configure Installer Setup, for...

Owner's Manual - Page 39

Get to Know Your Thermostat Display (Cont) Display TUE SHOWS CURRENT DAY OF THE WEEK FAN SHOWS FAN SETTING INSIDE TEMPERATURE SHOWS THE CURRENT INSIDE... CLOCK SCREEN MORE SYSTEM SHOWS CURRENT SYSTEM POSITION TIME DISPLAY CURRENT TIME OF DAY, HOLD TIME REMAINING OR NUMBER OF VACATION DAYS REMAINING FOLLOWING SCHEDULE SHOWS THE THERMOSTAT IS FOLLOWING THE PROGRAMMED SCHEDULE M22239 39 69-1725-1

Owner's Manual - Page 42

Program Your Heating and Cooling Schedule Your thermostat can control up to a comfortable temperature. Return-Period when you return home and want your home back to four different schedule periods per day: Wake-Period when you awaken and want your home at a comfortable temperature. Edit Schedule 1. Sleep-Period when you are asleep and...

Owner's Manual - Page 46

Press Sched key. 2. MON TUE WED THU FRI OK TO PICK MULTIPLE DAYS FAN SAT SUN HEAT COOL DONE 6. Press schedule period you can cancel the Leave and Return periods (the thermostat would then control to cancel (Wake, Leave, Return or Sleep). Press Cancel Period key. Cancel a Schedule Period NOTE: You may want...

Owner's Manual - Page 50

Press the Up and Down arrow keys to change the number of days. 1. When the number of days of days you desire the thermostat to indicate that Vacation Hold has ended. 69-1725-1 50 Press the Hold key twice. Screen shows "Hold Temperature Until" 1 day. 3. To cancel Vacation Hold override early, press the Cancel key. Notice...

Owner's Manual - Page 53

...thermostat determines that the heating or cooling system is coming on before you . For example-you get out of bed or how long does it adjusts the next day's recovery start time accordingly. 53 69-1725-1 Each day.... Set the Wake period for you return from work? The thermostat alerts that for 6:00 AM and 70°F. The thermostat then turns on the heat before you want the...

Owner's Manual - Page 58

The minimum-off timer is a call during the minimum-off timer, the thermostat shows "Wait" in the display. If there is activated after the compressor turns off ... "Heat On"a appears solidly in compressor protection (minimum-off . Built-in Compressor Protection The RTH8500D Thermostat has built-in the display and the compressor and fan turn on. _________ aHeat Pumps only. 69-1725-1 58

Owner's Manual - Page 61

... not shown in cool mode. the room temperature ("Heat On" is Check Installer Setup Number 0170, Heating running in display). working. 61 69-1725-1 Troubleshooting Tips (Continued) If . . . and/or Cooling System Type, and make sure heat temperature ... Tips. See Heating or Cooling system does the Heat Pump is wired to the thermostat L upper right corner and terminal.